Endogenous porphyrins in Acne absorb the energy of pulsed light to produce photochemical reactions that release singlet oxygen to effectively kill propionibacterium in acne. 

◉ Propionibacterium Acnes (PAC) produces endogenous porphyrins during its normal metabolism.

◉ The energy of specific bands is absorbed by porphyrin through the skin, and porphyrin is stimulated to release singlet oxygen ion

◉ Singlet oxygen ion can effectively kill propionibacterium acnes

It adopts the“Selectively Thermal Absorption of Laser” principle. When the specific wavelength of light acting on the skin will be absorbed selectively by the melanin of diseased tissue (the content of melanin in diseased tissue is much more than that of normal tissue.). Some of melanin in the deep layer will be cracked for fine particles, and the particles will be swallowed by the phagocyte and expelled from body with lymphatic system. Some of melanin in the superficial tissue will be popped out of epidermis,and then, the color of epidermis pigment will be deeper. The melanin will drop with the skin cuticle metabolism. Thus, the freckle will be faded away. However, the normal skin absorbs less energy, and there is the strong epidermis cooling technology to protect it.Therefore, the normal skin won’ t be hurt, at the same time, the skin complexion will be improved.

After the melanin in the hair stem absorbs the light energy selectively, the light energy will be converted into thermal energy, which is transmitted to the isthmus and follicle (dermal papilla, hair growth point) of hair follicle through the hair stem to damage the blood vessels in the dermal papilla and cause them heat and atrophy. So as to achieve the effect of hair removal.